In a story Jan. 28 about Massachusetts banning bump stocks - devices designed to make semi-automatic rifles function like fully automatic weapons - The Associated Press reported erroneously that the ban is the first in the U.S. Massachusetts was the first state to enact a ban since the October mass shootings in Las Vegas.

A corrected version of the story is below:

Police ask bump stock owners to surrender devices before ban

A Massachusetts law banning devices designed to make semi-automatic rifles mimic the firing action of fully automatic weapons is set to go into effect

BOSTON (AP) - A Massachusetts law banning devices designed to make semi-automatic rifles mimic the firing action of fully automatic weapons goes into effect this week.

Massachusetts State Police says starting Thursday, people will be prohibited from possessing bump stocks under all circumstances. The law passed in November also bans the possession of trigger cranks.

Massachusetts was the first state to ban bump stocks since the October mass shooting in Las Vegas, in which the shooter used the device to kill 58 people and injured hundreds more.

State Police says the first part of the law, which the outlawed the sale or transfer of ownership of the devices, went into effect when the law was signed.

Authorities say owners of bump stock or trigger cranks are should surrender them to police by Thursday.